The Seven Kingdoms of Kongo dia Nlaza were a confederation of states in west Central Africa that were absorbed into the Kingdom of Kongo in the 16th century. This polity or region was first mentioned in texts of the Kingdom of Kongo in the late 16th century, although it probably existed much earlier. It was only then being incorporated into Kongo, through the kingdom's eastern province of Mbata Kingdom. It is unclear what the Seven Kingdoms were, though perhaps they included Kundi and Okanga. Presumably these kingdoms represented an alliance of several smaller polities, though the sources of the time tell us nothing about it.